Anatomy Questions

Abigail Withers
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Dental Technology (Anatomy and physiology) Flashcards on Anatomy Questions , created by Abigail Withers on 04/05/2018.

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Abigail Withers
Created by Abigail Withers over 1 year ago
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Question Answer
Define: Occlusion The relationship of the upper and lower teeth when they are in contact (Ireland, 2010, pg246) Or, Occlusion may be defined as the contact relationship of the teeth in function or parafunction.
What is the purpose of an osteoblast? To form bone matrix, osteoblasts synthesise and secrete a collagen matrix and calcium salts to create new bone.
Define: Dental caries An infectious disease resulting in a progressive destruction of tooth tissue (Ireland, 2010, p62)
How is a tooth retained in the alveolus? The alveolar processes hold and support the maxillary teeth, the processes conform closely to the shape of the tooth root it contains. the teeth are supported in the alveoli by connective tissue called the periodontal ligament.
Describe the different states of occlusion. - Static occlusion is simply the relationship between the teeth when the mandible is closed and stationary. - Functional (Dynamic) Occlusion - Pathological occlusion - Centric occlusion is the relationship of the maxilla and mandible when the teeth are in occlusal contact irrespective of the position of the mandibular condyles. - Canine guided occlusion
Explain the difference between centric relation and centric occlusion Centric occlusion is the relationship of the maxilla and mandible when the teeth are in occlusal contact irrespective of the position of the mandibular condyles. Centric relation is the relationship of the mandible and maxilla, independent of tooth contact, when the mandible condyles are in their most superior and anterior position resting on the posterior slopes of the articulator eminences with the disks properly interposed.
What are the common diseases of the soft tissues surrounding teeth? - Periodontal diseases - Gingivitis - inflammation of the tooth-supporting tissues. Periodontitis - where the gingival crevice develops into a deep pocket. - Disease relating to dental prosthesis - Stomatitis - small ulcer or sore in the mouth, produces swollen tissues beneath denture.
Explain why bacteria should be kept to a minimum? Probiotics help digestion other bacteria can protect teeth and gums. Some bacteria bad for our dental health. maintaining a good ph balance allows a healthy balance of bacteria. Dental pellicle is a "thin deposit of salivary and bacterial glycoproteins deposited on the surface of a tooth within minutes of being cleaned" It protects the tooth from the acids produced by oral microorganisms. However, bacteria may adhere to the pellicle and form a biofilm upon it. Plaque is a type of biofilm, Sugar foods increase acidity in the mouth, saliva neutralises it but if ph takes a long time to neutralise, the bacteria has enough time to wreak havoc on the teeth and gums. This can lead to tooth decay. Time, tooth tissue, bacteria and plaque cause tooth decay.
Describe the three types of tooth notation. Giving four examples of different teeth using the systems. The Zsigmondy - Adolf Zsigmondy Grid/quadrant system 1-8 A-E The universal - German dentist Julius 1-32 clockwise A-T clockwise FDI - German dentist Jochen Two digit system 18 to 48 and 55 to 85 quadrant 1-4 teeth 1-8 quadrant 5-8 teeth 1-5
What is the location, structure and function of the mandible?
Explain the terms ‘origin’ and ‘insertion’ in relation to muscles. With the aid of diagrams, illustrate the origin and insertion of two muscles of mastication. The origin is the point at which a muscle attaches to the bone, it is stable and doesn't move. The insertion is the part of the muscle that moves towards the origin when the muscle contracts.
Discuss the structure of the tongue, with intrinsic and extrinsic muscles. The tongue is divided into two lateral portions by a median connective tissue septum which extends the entire length of the tongue. Intrinsic muscles - Superior longitudinal Vertical Transverse Inferior longitudinal Extrinsic muscles - Palatoglossus Styloglossus Hyoglossus Genioglossus